Comparison

IronLog vs Stacks

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

IronLog

Track your strength training progress with detailed logs of sets, personal records, and custom routines. Features include a rest timer, plate calculator, and RPE tracking. Offers advanced analytics and coaching features with a one-time purchase.

Highlights
  • Log workouts, sets, and personal records
  • Up to four custom routines (unlimited with Pro)
  • Rest timer and plate calculator
  • Supersets, circuits, and drop sets
  • RPE and notes on sets
  • Advanced analytics and Pro Coach features
Features
Read full description

Know what you lifted. See what comes next. IronLog is a focused strength-training log for sets, personal records and routines. It is free to download, with no account and no ads. FREE PLAN • Log workouts, sets and personal records, and review your history • Up to three custom routines. Delete one to open a slot; routines you have already saved stay usable • A bundled exercise library, plus your own custom movements • Rest timer, plate calculator and estimated one-rep max • Supersets, circuits, giant sets and drop sets • RPE and notes on your sets • Starter programs and ready-made workouts, with optional PR-based starting weights • Next-target and plateau suggestions • Training calendar, basic trends and a 7-day muscle-split chart • CSV import, and CSV export of your exercise records, in Settings • Delete individual workouts and records from History The free plan has no time limit and needs no account. IRONLOG PRO: MONTHLY, YEARLY OR LIFETIME Core workout logging, history, up to three custom routines, calculator, and timer stay free. IronLog Pro unlocks only unlimited custom routines, custom rest per exercise or set, advanced analytics, Pro Coach, and reusable advanced templates. Choose a monthly or yearly subscription, or pay once for lifetime. Every plan unlocks the same Pro features. The yearly plan includes a 7-day free trial for new subscribers. Everything IronLog Pro adds: • Unlimited custom routines: save a fourth routine and beyond • Custom rest time for each exercise or set • Advanced analytics: cross-month PR trends, a 12-week combined-volume heatmap, and muscle-group balance • Pro Coach: periodization and fatigue insights • Reusable advanced templates (Pro Quick Starts): start a curated preset as one combined session, or save it as your own reusable routine. The day-by-day starter programs stay free SUBSCRIPTION DETAILS IronLog Pro Monthly renews every month and IronLog Pro Yearly renews every year. Payment is charged to your Apple Account when you confirm the purchase. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the current period, and your account is charged for the renewal within 24 hours before that period ends. Manage or cancel anytime in Settings > Apple Account > Subscriptions. Any unused part of the yearly plan's free trial is forfeited when you buy a subscription. Lifetime is a one-time purchase and does not renew. The App Store shows the price in your currency before you buy, and Restore Purchases is in the app. IronLog is a training log, not medical advice. Estimated one-rep max values are estimates; choose weights that suit your experience. Terms of Use (Apple standard EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ IronLog terms: https://ironlog.co/terms/ Privacy Policy: https://ironlog.co/privacy/

About

Stacks

Features
Read full description

Stacks brings calorie tracking and strength training together in one app. It opens on today: how your calories and macros stand against the targets you set, so you see where the day stands as soon as you open it. Adding food is a few taps. Search the OpenFoodFacts database or look up a barcode, create your own foods when you need to, and save a meal you eat often as a recipe to add it again in one tap. If you miss a day, you can still add meals to past dates so the history stays accurate. For training, build your own workout templates or start a session and add exercises as you go, and with Stacks Pro lay those templates out over a week, rest days and all. Weight and reps are recorded with input modes for total load, per side, per dumbbell or bodyweight, with a rest timer between sets. Every session is kept in a full history, with personal records and per-exercise progress. Body weight and measurements are recorded over time, with body weight shown as a 30-day trend. Each week, a review brings the period together: average calories per day, weight change, training volume and number of sessions. Daily targets are calculated from your sex, activity level and goal, whether you are cutting, maintaining or bulking, and optional reminders prompt you to weigh in, add the day's meals and check the weekly review. You can export your data at any time, or delete your account and all its data in one step. Stacks Pro is an optional subscription. It unlocks unlimited meal photo and receipt scans, training programs that lay your workout templates out over a week, rest days included, and a suggested weight and rep count for your next set, based on your own training history; every other feature works without it. It comes as a monthly or an annual plan, with a free trial for new subscribers, and renews automatically unless it is cancelled at least 24 hours before the end of the period. The price for your region is shown in the app before any purchase, and payment is charged to your Apple account. Terms: https://usestacks.app/terms

Screenshots

IronLog4 screens
Stacks4 screens

Verdict

The call

The clearest difference is device support: IronLog at 3 against Stacks's 1. Stacks's advantage is iOS requirement (16.4 vs 18.0). On price, update cadence, ads and in-app purchases there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. IronLog sells 3 in-app purchases, starting at $3.99 per month and Stacks sells 2 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

IronLog ships an update every 2 weeks, Stacks fortnightly. Both last shipped on November 5, 2026.

Scorecard2 real differences · 8 level
IronLog versus Stacks: the parameters behind the verdict, then further details
ParameterIronLogStacks
PriceFreeFree
Rating5.0 (5 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings5 — better—
Update frequencyEvery 2 weeksFortnightly — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, Apple Watch — betteriPhone
Requires iOS18.016.4 — better
Further details — not scored
Size40 MB73 MB
Age rating4+4+
DeveloperGustavo Payano VasquezAurelien Durier

In-app purchases

3 purchases

IronLog

Subscriptions2
  • IronLog Pro Monthly$3.991 Month
  • IronLog Pro Annual7 Days trial$24.991 Year
One-time1
  • Lifetime Pro$69.99
2 purchases

Stacks

Subscriptions2
  • Stacks Pro Monthly7 Days trial$3.991 Month
  • Stacks Pro Annual7 Days trial$34.991 Year

Questions

Is IronLog free?
IronLog is free to download, with in-app purchases available.
Is Stacks free?
Stacks is free to download, with in-app purchases available.
Do IronLog or Stacks have ads?
Neither IronLog nor Stacks shows ads.
Which is updated more often, IronLog or Stacks?
IronLog ships an update every 2 weeks, and Stacks fortnightly. Most recently, IronLog was updated on November 5, 2026 and Stacks on November 5, 2026.

Other comparisons